CopyObjectMetadata.java

/*
 * MinIO Java SDK for Amazon S3 Compatible Cloud Storage,
 * (C) 2017 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.lang.StringBuilder;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;
import java.util.Map;
import java.util.HashMap;
import org.xmlpull.v1.XmlPullParserException;

import io.minio.MinioClient;
import io.minio.CopyConditions;
import io.minio.errors.MinioException;

public class CopyObjectMetadata {
  /**
   * MinioClient.copyObject() example.
   */
  public static void main(String[] args)
    throws IOException, NoSuchAlgorithmException, InvalidKeyException, XmlPullParserException {
    try {
      /* play.min.io for test and development. */
      MinioClient minioClient = new MinioClient("https://play.min.io:9000", "Q3AM3UQ867SPQQA43P2F",
                                                "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");

      /* Amazon S3: */
      // MinioClient minioClient = new MinioClient("https://s3.amazonaws.com", "YOUR-ACCESSKEYID",
      //                                           "YOUR-SECRETACCESSKEY");

      // Create some content for the object.
      StringBuilder builder = new StringBuilder();
      for (int i = 0; i < 1000; i++) {
        builder.append("Sphinx of black quartz, judge my vow: Used by Adobe InDesign to display font samples. ");
        builder.append("(29 letters)\n");
        builder.append("Jackdaws love my big sphinx of quartz: Similarly, used by Windows XP for some fonts. ");
        builder.append("(31 letters)\n");
        builder.append("Pack my box with five dozen liquor jugs: According to Wikipedia, this one is used on ");
        builder.append("NASAs Space Shuttle. (32 letters)\n");
        builder.append("The quick onyx goblin jumps over the lazy dwarf: Flavor text from an Unhinged Magic Card. ");
        builder.append("(39 letters)\n");
        builder.append("How razorback-jumping frogs can level six piqued gymnasts!: Not going to win any brevity ");
        builder.append("awards at 49 letters long, but old-time Mac users may recognize it.\n");
        builder.append("Cozy lummox gives smart squid who asks for job pen: A 41-letter tester sentence for Mac ");
        builder.append("computers after System 7.\n");
        builder.append("A few others we like: Amazingly few discotheques provide jukeboxes; Now fax quiz Jack! my ");
        builder.append("brave ghost pled; Watch Jeopardy!, Alex Trebeks fun TV quiz game.\n");
        builder.append("---\n");
      }

      // Create a InputStream for object upload.
      ByteArrayInputStream bais = new ByteArrayInputStream(builder.toString().getBytes("UTF-8"));

      // Create object 'my-objectname' in 'my-bucketname' with content from the input stream.
      minioClient.putObject("my-bucketname", "my-objectname", bais, Long.valueOf(bais.available()),null, null,
              "application/octet-stream");
      bais.close();
      System.out.println("my-objectname is uploaded successfully");

      CopyConditions copyConditions = new CopyConditions();
      // Replace metadata on destination object with custom metadata.
      copyConditions.setReplaceMetadataDirective();

      Map<String, String> metadata = new HashMap<>();
      metadata.put("Content-Type", "application/javascript");

      minioClient.copyObject("my-bucketname", "my-objectname", "my-destbucketname",
                             "my-objectname-copy", copyConditions, metadata);
      System.out.println("my-objectname-copy copied to my-destbucketname successfully");
    } catch (MinioException e) {
      System.out.println("Error occurred: " + e);
    }
  }
}